Rectangular panel fastener



FIG. 1 is a top, left rear isometric view showing our new design;

FIG. 2 is a top, right front isometric view of FIG. 1;

FIG. 3 is a top view being the same as the bottom view of FIG. 1; and,

FIG. 4 is a side view of FIG. 1. 

The ornamental design for a rectangular panel fastener, as shown and described. 